Y.F.S. Reef Fish Food Golden Pearls Fry & Coral 300-500 Micron 2oz Golden Pearls is a revolutionary larval diet that is currently experiencing great success in marine fish hatcheries in Europe The secret to its success is an innovative manufacturing process which involves the agglomeration of micro-encapsulated particles that "traps" tiny air pockets inside of the feed particles This results in a "non-sinking" particle diet that remains suspended in the larvae tank The introduction of Golden Pearls has significantly reduced the dependence, and in some cases, replaced live feeds (rotifers and Artemia nauplii) in commercial marine fish and shrimp hatcheries Golden Pearls are available in particle sizes from 5 to 800 microns. For comparison, a newly hatched brine shrimp is about 400 microns